content: /*
   * Copyright 2011-2016 David Karnok
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package ix;
  
  import java.util.Iterator;
  
  final class IxSequenceEqual<T> extends IxSource<T, Boolean> {
  
      final Iterable<? extends T> other;
  
      final IxPredicate2<? super T, ? super T> comparer;
  
      IxSequenceEqual(Iterable<T> source, Iterable<? extends T> other,
              IxPredicate2<? super T, ? super T> comparer) {
          super(source);
          this.other = other;
          this.comparer = comparer;
      }
  
      @Override
      public Iterator<Boolean> iterator() {
          return new SequenceEqualIterator<T>(source.iterator(), other.iterator(), comparer);
      }
  
      static final class SequenceEqualIterator<T> extends IxSourceIterator<T, Boolean> {
  
          final Iterator<? extends T> other;
  
          final IxPredicate2<? super T, ? super T> comparer;
  
          SequenceEqualIterator(Iterator<T> it, Iterator<? extends T> other,
                  IxPredicate2<? super T, ? super T> comparer) {
              super(it);
              this.other = other;
              this.comparer = comparer;
          }
  
          @Override
          protected boolean moveNext() {
  
              Iterator<T> it2 = it;
  
              while (it2.hasNext()) {
  
                  T v = it2.next();
  
                  if (other.hasNext()) {
  
                      T u = other.next();
  
                      if (!comparer.test(v, u)) {
  
                          value = false;
                          hasValue = true;
                          done = true;
                          return true;
                      }
                  } else {
                      value = false;
                      hasValue = true;
                      done = true;
                      return true;
                  }
              }
              if (other.hasNext()) {
                  value = false;
                  hasValue = true;
                  done = true;
                  return true;
              }
  
              value = true;
              hasValue = true;
              done = true;
              return true;
          }
  
  
      }
  
  }
  